How to Reload or Upgrade Firmware?

Start with safety and logs

Power down before opening a miner, label cables before moving boards, and capture logs before repeated reboots erase useful evidence. Record model, firmware, pool, uptime, fan speed, temperature, reject rate, chain count, and the exact error text.

Confirm the fault class

Separate configuration faults from hardware faults first. Pool errors, DNS failures, bad worker names, overheating, weak power, fan faults, and missing hashboards can look similar from the dashboard but require different fixes.

Document the test path

Change one variable at a time and keep the before/after result. Note cable swaps, PSU swaps, firmware changes, pool changes, fan replacements, ambient temperature, and whether the fault follows a hashboard, control board, network, or power source.

When to escalate

Escalate to professional repair when there is a burned smell, melted connector, breaker trip, corrosion, repeated hashboard loss, liquid exposure, or a board-level fault that returns after a basic cable, power, firmware, and airflow check.

After the fix

Run the miner long enough to confirm stable accepted hashrate, fan behavior, chip temperature, reject rate, and pool-side reporting. A dashboard that looks normal for five minutes is not enough evidence for a recurring power, heat, or hashboard fault.

May 28, 2023 · D-Central Technologies · ⏱ 2 min read

Last updated: September 15, 2024

This guide applies to all ANTMINER models, except the B3.

For instructions on B3 firmware upgrade, please refer to the B3 firmware upgrade instructions.

Steps for Firmware Upgrade:

Visit our website to download the firmware: Go to our firmware page. On the left sidebar, select your miner and then click “Firmware”. You might need to scroll up to see the file. Different firmware versions are available for different miner models. Make sure to select the one that is specific for your miner. Note that we have a new firmware called ASICBoost for S9 series and T9+ miners. For more information on this, visit our page on ASICBoost firmware for ANTMINER S9 series and T9+.
Download the firmware: Use either Google Chrome or Firefox browser to download the firmware. Do not open the firmware file. Instead, download it to a convenient location on your PC or laptop. If you’re using a Mac, disable the setting that automatically opens the file.
Go to your miner interface and perform the upgrade: Navigate to the System > Upgrade section. Click “Browse” to find the downloaded firmware file and “Flash” to load the file.

Remember to keep your miner powered on and running while the firmware loads and for an additional 20 minutes after. If the upgrade is successful, you should see a message that says “System Upgrade Success.”

For S9 models, there might be instances where the upgrade fails. If you encounter this, please visit What to do when S9 upgrade has failed? for troubleshooting tips.

Should you have any inquiries or encounter difficulties, please feel free to contact us for assistance.

ASIC Repair Bitaxe Pioneer Open-Source Mining Space Heaters Home Mining

D-Central Technologies is a Canadian Bitcoin mining company making institutional-grade mining technology accessible to home miners. 2,500+ miners repaired, 350+ products shipped from Canada.

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Editorial review and limitations

Reviewed by D-Central's mining hardware and ASIC repair editorial team for practical accuracy, buyer risk, repair context, and operational assumptions. Verify current hardware price, stock, network difficulty, BTC price, power rate, shipping, tax, firmware, and device condition before buying, hosting, repairing, or retiring mining hardware.

Last reviewed September 15, 2024. D-Central, Laval, Quebec.

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Last reviewed September 15, 2024.